More than 100 billionaires and their spouses have donated to groups supporting Sen. Susan Collins's election bid.Getty ImagesSusan Collins has survived Maine elections for nearly three decades by selling a rare political product: middle-of-the-road Republicanism. She touts herself as a bipartisan brand, with a moderate’s affect. She’s also the last GOP senator standing in New England.Collins’ home state has voted for Democrats in every presidential election since 1992, and recent polling showed a tight race with Democratic opponent Graham Platner. The race is now in flux as Platner faces calls from his party to drop out after an accusation of sexual assault reported by POLITICO, which he denies. Platner has said he is taking time to consider the “best path forward,” and has until July 13 to withdraw his candidacy, in which case Democrats must name a replacement by July 27. Regardless of who Democrats put up as their nominee, Collins is not showing up to the fight empty-pocketed. According to federal campaign filings for the 2025-2026 election cycle, updated through June 7, at least 111 billionaires and their spouses from across the country gave just shy of $10 million to help her keep the seat. These donations include direct campaign contributions–which are capped at $7,000 per cycle–as well as contributions to other PACs supporting her bid. Among these, Pine Tree Results, the main pro-Collins super PAC, has raised over $16 million and has already spent nearly $4 million opposing Platner. Platner’s candidacy has drawn support from five billionaires, none of whom contributed more than a few thousand to the embattled Democratic upstart. With more than four months until polls open, much more billionaire cash is likely to enter the race. Here are Collins’ billionaire backers, ranked by amount donated to pro-Collins groups:Ken GriffinGetty ImagesDonations to Collins Groups: $2,500,000Net Worth: $49.8BSource of Wealth: Hedge fundsGriffin’s fortune stems from his role as founder and CEO of hedge fund giant Citadel, in addition to his stake in Citadel Securities, the firm he founded that handles roughly one in four U.S. stock trades. Griffin has a long history of writing big checks to Republican causes, including over $27 million to the GOP-aligned Senate Leadership Fund super PAC during the 2024 cycle. Though Griffin voted for Donald Trump in 2024, he has since criticized the president’s tariff policy. Earlier this year, Griffin was pulled into a national political fight after New York City Mayor Zohran Mamdani called him out in a video promoting a new tax on luxury second homes, prompting rebuke from Citadel and Griffin. His gift to Collins was through her main super PAC, Pine Tree Results. Stephen SchwarzmanGetty ImagesDonations to Collins Groups: $2,024,000Net Worth: $39.3BSource of Wealth: Blackstone The founder and CEO of private equity behemoth Blackstone, which manages over $1 trillion in assets, Schwarzman has a history of backing Republicans and donated $5 million to the Trump-aligned MAGA Inc. hybrid PAC in 2025. Schwarzman was also one of six billionaires who accompanied Trump on his trip to China in May. He gave $2 million to the Collins-aligned Pine Tree Results, as well as several thousand more to various other PACs associated with the candidate. Jim DavisMediaNews Group via Getty ImagesDonations to Collins Groups: $1,019,000Net Worth: $6.1BSource of Wealth: New BalanceDavis has a 95% share in shoe and athletic apparel company New Balance. While he has a history of donating to Republican causes, the Massachusetts-based billionaire’s $1 million donation to Pine Tree Results in 2025 ranks among his three largest national political contributions on record. Paul SingerDonations to Collins Groups: $1,007,000Net Worth: $6.7BSource of Wealth: Hedge fundsSinger, the founder of hedge fund firm Elliott Management, is a major Republican donor who gave $5 million to Trump’s main super PAC in 2024. Singer’s foundation, to which he’s given around $300 million, supports Jewish and pro-Israel causes, including Hillel and BBYO. He is also an advocate for LGBT causes within the Republican party. Jude ReyesDonations to Collins Groups: $524,000Net Worth: $13.1BSource of Wealth: Food distributionJ. Christopher ReyesDonations to Collins Groups: $508,500Net Worth: $13.1BSource of Wealth: Food distributionBrothers Jude and Chris Reyes co-chair the food and beverage distribution company Reyes Holdings. The two, both based in Florida, have made sizable contributions to Republican groups across the U.S., totaling nearly $11 million just this past year, including their combined $1 million to Pine Tree Results.John MaloneDonations to Collins Groups: $507,000Net Worth: $11.2BSource of Wealth: Cable television“Cable cowboy” Malone was responsible for building up pioneering cable giant TCI before becoming its CEO in 1973. On an episode of the PBS program “Firing Line” last September, Malone lamented what he saw as a lack of a middle in American politics, and said he supports “the hell out of Susan Collins,” because she’s a “centrist Republican surviving in the Republican Party by the skin of her teeth.” Louis BaconDonations to Collins Groups: $501,200Net Worth: $1.0BSource of Wealth: Hedge fundsBacon was a macro-trading heavyweight who cashed in on the 1987 crash before starting his Moore Capital hedge fund in 1989. In addition to his track record of GOP-aligned political contributions, he is a supporter of environmental conservation causes through his Moore Charitable Foundation. Michael Smith Donations to Collins Groups: $107,000Net Worth: $3.0BSource of Wealth: Liquefied natural gasSmith owns a controlling stake in natural gas company Freeport LNG, which benefitted from the shale boom. He has made several large-dollar contributions to Republican-aligned PACs.Alexander KarpDonations to Collins Groups: $100,000Net Worth: $11.1BSource of Wealth: SoftwarePalantir CEO Karp’s political donations have become more idiosyncratic in recent years. Historically he has given to Democratic candidates, and described himself as a leftist, but his posture has shifted rightward. He made a $1 million donation to the president’s main super PAC in late 2024, and has contributed to candidates from both parties. Bruce Karsh | Net Worth: $2.6B | Donations to Collins Groups: $67,000Martha Karsh | Spouse of Bruce Karsh | Donations to Collins Groups: $67,000Stanley Druckenmiller | Net Worth: $7.8B | Donations to Collins Groups: $67,000Neal Blue | Net Worth: $5.5B | Donations to Collins Groups: $62,000David Steward | Net Worth: $12.4B | Donations to Collins Groups: $57,000Marc Rowan | Net Worth: $7.3B | Donations to Collins Groups: $57,000Patrick Ryan | Net Worth: $7.7B | Donations to Collins Groups: $34,000Shirley Ryan | Spouse of Patrick Ryan | Donations to Collins Groups: $34,000Daniel Loeb | Net Worth: $3.9B | Donations to Collins Groups: $28,500Christine Schwarzman | Spouse of Stephen Schwarzman | Donations to Collins Groups: $24,000Lori Reyes | Spouse of Jude Reyes | Donations to Collins Groups: $24,000Eric Smidt | Net Worth: $17.9B | Donations to Collins Groups: $20,000Thomas Tull | Net Worth: $5.3B | Donations to Collins Groups: $18,100David Blitzer | Net Worth: $4.0B | Donations to Collins Groups: $14,000Frank Fertitta III | Net Worth: $3.8B | Donations to Collins Groups: $14,000Jill Fertitta | Spouse of Frank Fertitta III | Donations to Collins Groups: $14,000Lorenzo Fertitta | Net Worth: $3.8B | Donations to Collins Groups: $14,000H. Ross Perot Jr. | Net Worth: $6.5B | Donations to Collins Groups: $14,000Steven Klinsky | Net Worth: $4.9B | Donations to Collins Groups: $14,000Teresa Fertitta | Spouse of Lorenzo Fertitta| Donations to Collins Groups: $14,000Lawrence Golub | Net Worth: $3.3B | Donations to Collins Groups: $13,000Charles Schwab | Net Worth: $13.0B | Donations to Collins Groups: $12,000George Roberts | Net Worth: $12.8B | Donations to Collins Groups: $12,000Henry Kravis | Net Worth: $11.8B | Donations to Collins Groups: $12,000Jan Koum | Net Worth: $16.8B | Donations to Collins Groups: $12,000John Catsimatidis | Net Worth: $4.8B | Donations to Collins Groups: $12,000Joseph Bae | Net Worth: $1.9B | Donations to Collins Groups: $12,000Marc Andreessen | Net Worth: $1.9B | Donations to Collins Groups: $12,000Melinda Gates | Net Worth: $30.4B | Donations to Collins Groups: $12,000Scott Nuttall | Net Worth: $2.1B | Donations to Collins Groups: $12,000Shyam Sankar | Net Worth: $1.1B | Donations to Collins Groups: $12,000Ken Fisher | Net Worth: $13.2B | Donations to Collins Groups: $10,297Jed McCaleb | Net Worth: $3.9B | Donations to Collins Groups: $10,000Laura Arnold | Spouse of John Arnold | Donations to Collins Groups: $10,000Bruce Toll | Net Worth: $2.2B | Donations to Collins Groups: $9,000Anne Reyes | Spouse of Chris Reyes | Donations to Collins Groups: $8,500Hendrik Meijer | Net Worth: $7.1B | Donations to Collins Groups: $8,500Andrea Wynn | Spouse of Steve Wynn | Donations to Collins Groups: $7,000Andrew Beal | Net Worth: $12.7B | Donations to Collins Groups: $7,000Barbara Banke | Net Worth: $2.1B | Donations to Collins Groups: $7,000Belinda Vandersloot | Spouse of Frank Vandersloot | Donations to Collins Groups: $7,000Bill Haslam | Net Worth: $6.0B | Donations to Collins Groups: $7,000Bruce Kovner | Net Worth: $9.0B | Donations to Collins Groups: $7,000Clifford Asness | Net Worth: $6.3B | Donations to Collins Groups: $7,000Cristen Haslam | Spouse of Bill Haslam | Donations to Collins Groups: $7,000Daniel Lubetzky | Net Worth: $2.3B | Donations to Collins Groups: $7,000Darwin Deason (deceased) | Donations to Collins Groups: $7,000David MacNeil | Net Worth: $4.2B | Donations to Collins Groups: $7,000Debra Black | Donations to Collins Groups: $7,000Donald Friese | Net Worth: $1.8B | Donations to Collins Groups: $7,000Elaine Langone | Donations to Collins Groups: $7,000Elizabeth Uihlein | Net Worth: $7.5B | Donations to Collins Groups: $7,000Frank Vandersloot | Net Worth: $3.3B | Donations to Collins Groups: $7,000George Kaiser | Net Worth: $16.5B | Donations to Collins Groups: $7,000Hartley Rogers | Net Worth: $1.2B | Donations to Collins Groups: $7,000Iris Smith | Spouse of Michael Smith | Donations to Collins Groups: $7,000James Haslam III | Net Worth: $10.3B | Donations to Collins Groups: $7,000James Kennedy | Net Worth: $9.1B | Donations to Collins Groups: $7,000James Litinsky | Net Worth: $1.0B | Donations to Collins Groups: $7,000Joseph Edelman | Net Worth: $2.7B | Donations to Collins Groups: $7,000Ken Langone | Net Worth: $10.6B | Donations to Collins Groups: $7,000Laurel Asness | Spouse of Cliff Asness | Donations to Collins Groups: $7,000Leslie Malone | Spouse of John Malone | Donations to Collins Groups: $7,000Marc Lipschultz | Net Worth: $1.5B | Donations to Collins Groups: $7,000Philip Anschutz | Net Worth: $19.4B | Donations to Collins Groups: $7,000Ronald Lauder | Net Worth: $4.9B | Donations to Collins Groups: $7,000Steve Wynn | Net Worth: $3.9B | Donations to Collins Groups: $7,000Susan Haslam | Spouse of Jimmy Haslam | Donations to Collins Groups: $7,000Suzanne Kovner | Spouse of Bruce Kovner | Donations to Collins Groups: $7,000Tani Austin | Spouse of Bill Austin | Donations to Collins Groups: $7,000Thelma Steward | Spouse of David Steward | Donations to Collins Groups: $7,000William Ackman | Net Worth: $8.7B | Donations to Collins Groups: $7,000Robert Kraft | Net Worth: $13.8B | Donations to Collins Groups: $7,000Alexandra Parker | Spouse of Sean Parker | Donations to Collins Groups: $7,000Sean Parker | Net Worth: $3.4B | Donations to Collins Groups: $7,000Herbert Allen | Net Worth: $2.1B | Donations to Collins Groups: $7,000Andrea Friese | Spouse of Donald Friese | Donations to Collins Groups: $6,375Joe Lonsdale | Net Worth: $2.5B | Donations to Collins Groups: $6,000Laura Dangermond | Spouse of Jack Dangermond | Donations to Collins Groups: $5,500John Fisher | Net Worth: $3.4B | Donations to Collins Groups: $5,000Lee Bass | Net Worth: $2.8B | Donations to Collins Groups: $4,883Alice Walton | Net Worth: $121B | Donations to Collins Groups: $3,500Barbara Hyde | Spouse of Joseph Hyde III | Donations to Collins Groups: $3,500David Adelman | Net Worth: $2.4B | Donations to Collins Groups: $3,500Jim Walton | Net Worth: $129.9B | Donations to Collins Groups: $3,500Joseph Hyde III | Net Worth: $2.0B | Donations to Collins Groups: $3,500Margaretta Taylor | Net Worth: $6.0B | Donations to Collins Groups: $3,500Mitchell Jacobson | Net Worth: $2.0B | Donations to Collins Groups: $3,500Trevor Rees-Jones | Net Worth: $5.9B | Donations to Collins Groups: $3,500Charles B. Johnson | Net Worth: $5.7B | Donations to Collins Groups: $3,500Sarah Kennedy | Spouse of James Kennedy | Donations to Collins Groups: $3,000Joe Rogers Jr | Net Worth: $2.0B | Donations to Collins Groups: $2,500Andrew Tisch | Net Worth: $1.7B | Donations to Collins Groups: $1,500Anthony Pritzker | Net Worth: $4.9B | Donations to Collins Groups: $1,500Lukas Walton | Net Worth: $44.9B | Donations to Collins Groups: $1,200Palmer Luckey | Net Worth: $5.0B | Donations to Collins Groups: $1,200Baiju Bhatt | Net Worth: $5.8B | Donations to Collins Groups: $1,000Frank Laukien | Net Worth: $2.2B | Donations to Collins Groups: $1,000Jerry Speyer | Net Worth: $2.2B | Donations to Collins Groups: $1,000Phil Ruffin | Net Worth: $4.3B | Donations to Collins Groups: $500Sherrilyn Fisher | Spouse of Ken Fisher | Donations to Collins Groups: $400